The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-057-6840, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dynalec Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-057-6840 |
| Primary Part Number | 61690-005 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Transformer Function | OUTPUT |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | BRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 1.570 INCHES NOMINAL IN |
| Body Height | 1.480 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 3.0 WATTS SINGLE COMPONENT |
| Mounting Hole Diameter | 0.190 INCHES NOMINAL SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 1666.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Impedance Rating in Ohms | 213.0 NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Impedance Rating in Ohms | 4.0 NOMINAL AND 4.062 NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Impedance Rating in Ohms | 85.2 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Distance Between Mounting Facility Centers | 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Winding Operating Current | 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 200.0 HERTZ MINIMUM AND 6.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 10 TAB, SOLDER LUG |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5950-01-057-6840 is a Transformer,audio Frequency, manufactured by Dynalec Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-057-6840 has 2 manufacturer part numbers on file: 2171A1 (Electronic Transformer Corp Div Electronic Transformer Corporation), 61690-005 (Dynalec Corporation).
Key specifications for 61690-005: Transformer Function: OUTPUT; Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Mounting Method: BRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP. 19 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.